whats this? stem splitting towards bottom

[capasmokes]

hey guys not sure to be worried or not but noticed this on one of my plants heres a few photos, is it some sort of rot?

[Razz0r]

maybe rot? how wet is that medium?

[capasmokes]

not too bad, fed every 3 hours for 15 minutes in straight perlite

Edited April 17, 2016 by capasmokes

[capasmokes]

is this Collar rot? anyone?

[gippy]

Hows the airflow around the stems? Is the water pumping directly or even splashing on to those spots? Are you able to take pics of everything without the nasty hps glow?  Basically the more info you can supply the more accurate a diagnosis will be.

[capasmokes]

i think ive worked it out, the feed was maybe going a little to close to the stem, ive found a thread on another site with the same problem and everyones said its a moisture issue probably along with airflow too, the question is how should i treat it? some say hydrogen peroxide after scraping it all back with a blade also might adjust my fan a little lower and ive turned my feeders backwards away from the stem. the stem is also abit lower than the outside of the perlite around the pot which i think is causing this in the first place.

 

edit heres a link if anyone else comes across this problem http://www.thctalk.com/cannabis-forum/showthread.php?55319-How-to-Identify-and-Treat-stem-rot i believe this is the problem, not sure how badly it will effect my plants roots if it spreads

Edited April 18, 2016 by capasmokes